CN112454859A

CN112454859A - Machine barrel supporting frame of plastic extruder

Info

Publication number: CN112454859A
Application number: CN202011226320.0A
Authority: CN
Inventors: 李浒; 李伯如; 李伯胜; 李长�
Original assignee: Zhuzhou Lianxin Metal Foundry Co ltd
Current assignee: Linyi Futai Plastic Co ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-03-09
Anticipated expiration: 2040-11-06
Also published as: CN112454859B

Abstract

The invention discloses a plastic extruder barrel support frame, which comprises a mounting plate and a clamp; the two groups of mounting plates are arranged in parallel and fixedly mounted through four groups of lifting devices; the side, close to the lifting device, of the mounting plate is fixedly provided with mounting blocks, the side, far away from the mounting plate, of each mounting block is fixedly provided with clips, a strip-shaped plate is arranged between the bottom ends of two groups of clips fixedly mounted on the mounting plate, and a heat dissipation device is arranged in each strip-shaped plate; the two sides of the strip-shaped plate are symmetrically and fixedly provided with sliding rods, the sliding rods are arranged in the arc-shaped holes in a sliding manner, and the arc-shaped holes are arranged in the clamping clips; one end of the sliding rod, which is far away from the strip-shaped plate, is fixedly sleeved with a telescopic device, and the telescopic device is rotatably arranged on the rotating device; the heat dissipation device arranged in the device of the invention does periodic positive and negative rotation movement within a certain angle range, and carries out uniform heat dissipation treatment on the outer wall of the plastic extruder barrel, thereby avoiding the deformation of the outer wall and prolonging the service life of the plastic extruder barrel.

Description

Machine barrel supporting frame of plastic extruder

Technical Field

The invention relates to the technical field of support frames, in particular to a plastic extruder barrel support frame.

Background

Plastic extruders are widely used for processing and molding plastic materials, and generally require a certain height to facilitate operation when the plastic extruders are used, so that a support frame is generally arranged below a cylinder of the plastic extruder.

The existing support frame does not have the function of cooling the cylinder of the plastic extruder, the cylinder of the plastic extruder is often heated to 100-150 ℃, the temperature can cause the cylinder of the plastic extruder to deform to a certain extent, so that the service life of the cylinder of the plastic extruder is shortened, the support frame of the cylinder of the plastic extruder deforms, and the support frame of the cylinder of the plastic extruder is damaged.

Disclosure of Invention

The invention aims to provide a cylinder support frame of a plastic extruder, which solves the problems in the prior art.

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

a plastic extruder barrel support frame comprises a mounting plate and a clamp; the two groups of mounting plates are arranged in parallel and fixedly mounted through four groups of lifting devices; the lifting devices are symmetrically arranged on two sides between the two groups of mounting plates; mounting blocks are fixedly mounted on one sides of the mounting plates, which are close to the lifting device; a clamp is fixedly arranged on one side of the mounting block, which is far away from the mounting plate; a strip-shaped plate is arranged between the bottom ends of the two groups of clips fixedly arranged on the mounting plate, and a heat dissipation device is arranged in the strip-shaped plate; slide bars are symmetrically and fixedly arranged on two sides of the strip-shaped plate; the sliding rod is arranged in the arc-shaped hole in a sliding manner; the arc-shaped hole is arranged in the clamp; one end of the sliding rod, which is far away from the strip-shaped plate, is fixedly sleeved with a telescopic device; the telescopic device is rotatably arranged on the rotating device.

Further, the heat dissipation device comprises a third rotating shaft, a fourth rotating shaft, a second gear, a second chain, a second motor and fan blades; the third rotating shafts are provided with a group; four groups of fourth rotating shafts are arranged; the third rotating shaft and the fourth rotating shaft are uniformly distributed in parallel and rotatably arranged in the strip-shaped plate, and the fourth rotating shafts are symmetrically arranged on two sides of the third rotating shaft; second gears are fixedly arranged on the third rotating shaft and the fourth rotating shaft and are in transmission fit connection through a second chain; fan blades are arranged at the ends, far away from the mounting plate, of the third rotating shaft and the fourth rotating shaft in a transmission manner; the fan blades are arranged in the circular grooves; the circular groove is arranged in one side of the strip-shaped plate far away from the mounting plate; a protective net is fixedly arranged in one side of the circular groove far away from the fan blade; one end of the third rotating shaft, which is far away from the fan blades, is in transmission connection with a second motor; and the second motor is fixedly arranged on the strip-shaped plate.

Further, the telescopic device comprises a telescopic rod, a sliding plate, a first spring and a telescopic sleeve; the telescopic rod is fixedly sleeved on one end of the sliding rod away from the strip-shaped plate; one end of the telescopic rod, which is far away from the sliding rod, is fixedly provided with a sliding plate; a first spring is arranged on one side of the sliding plate, which is far away from the telescopic rod; the sliding plate and the first spring are both arranged in the telescopic sleeve in a sliding mode, and the first spring is in a compressed state; the end of the telescopic sleeve far away from the telescopic rod is fixedly sleeved on the rotating device.

Further, the rotating device comprises a first rotating shaft and a first motor; the first rotating shaft is provided with two groups; the first rotating shaft is rotatably arranged in the mounting plate; two groups of telescopic sleeves arranged on the same side are fixedly arranged on the first rotating shaft in parallel; one end of the first rotating shaft is in transmission connection with a first motor; the first motor is fixedly installed on one side of the installation plate, and the first motor does forward and reverse rotation movement on a certain angle.

Further, the lifting device comprises a lifting sleeve, an I-shaped worm and a threaded pipe; four groups of lifting sleeves are arranged; the lifting sleeves are symmetrically and fixedly arranged on two sides of the mounting plate arranged below; an I-shaped worm is arranged in the lifting sleeve in a sliding manner; the top end of the I-shaped worm is rotatably arranged in an installation plate arranged above; the top end of the I-shaped worm is engaged with a threaded pipe in a rotating transmission manner; the threaded pipes are symmetrically and rotatably arranged in two sides of the mounting plate arranged above; the threaded pipes are connected with a transmission device in a transmission fit mode through first chains.

Further, the transmission device comprises a first gear, a second rotating shaft and a rotating disc; the second rotating shaft is rotatably arranged in one side of the mounting plate arranged above and is arranged between the two groups of threaded pipes; a first gear is fixedly arranged at the bottom end of the second rotating shaft; the first gear is in transmission fit connection with the threaded pipe through a first chain; the top end of the second rotating shaft is provided with a turntable in a transmission way; a plurality of groups of fixing grooves are uniformly distributed on the rotary table; and a fixing device is arranged in a fixing groove formed in one side of the turntable in a sliding manner.

Further, the fixing means comprises a fixing pin; the fixing pin is arranged in a fixing groove arranged on one side of the turntable in a sliding manner; one end of the fixing pin, which is far away from the fixing groove, is fixedly provided with a square plate; a second spring is arranged on one side, away from the fixing pin, of the square plate; the square plate and the second spring are arranged in the square groove in a sliding manner; the square groove is arranged in one side of the mounting plate arranged above; a pull rod is fixedly arranged above the square plate; the pull rod is arranged in the moving groove in a sliding manner; the moving groove is arranged in one side of the mounting plate arranged above, and the moving groove is fixedly communicated with the top end of one side, close to the fixing pin, of the square groove; the top end of the pull rod is arranged above the mounting plate arranged above.

Compared with the prior art, the invention has the beneficial effects that:

the device is provided with the heat dissipation device, and the heat dissipation device periodically rotates in the positive direction and the negative direction within a certain angle range, so that the heat dissipation device can uniformly dissipate heat of the outer wall of the cylinder of the plastic extruder, and the outer wall is prevented from being deformed due to high temperature, thereby prolonging the service life of the cylinder of the plastic extruder and preventing the support frame of the cylinder of the plastic extruder from being damaged.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic structural diagram of A-A in FIG. 1 according to the present invention.

Fig. 3 is an enlarged structural view of the area B in fig. 1 according to the present invention.

Fig. 4 is an enlarged structural view of the region C in fig. 1 according to the present invention.

Fig. 5 is an enlarged schematic view of the area D in fig. 2 according to the present invention.

FIG. 6 is a schematic view showing the structure of the clip of the present invention.

In the figure: 1-mounting plate, 2-mounting block, 3-clip, 4-arc hole, 5-strip plate, 6-sliding bar, 7-telescopic bar, 8-sliding plate, 9-first spring, 10-telescopic sleeve, 11-first rotating shaft, 12-circular groove, 13-first motor, 14-lifting sleeve, 15-I-shaped worm, 16-threaded pipe, 17-first chain, 18-first gear, 19-second rotating shaft, 20-rotating disc, 21-fixed groove, 22-fixed pin, 23-square plate, 24-second spring, 25-square groove, 26-pull bar, 27-moving groove, 28-third rotating shaft, 29-fourth rotating shaft, 30-second gear, 31-second chain, 32-second motor, 33-fan blades and 34-protective net.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1, 4 and 6, in an embodiment of the present invention, a plastic extruder barrel support comprises a mounting plate 1 and a clip 3; the mounting plates 1 are provided with two groups, and the two groups of mounting plates 1 are fixedly mounted in parallel through four groups of lifting devices; the lifting devices are symmetrically arranged on two sides between the two groups of mounting plates 1; the mounting blocks 2 are fixedly mounted on one sides of the mounting plates 1 close to the lifting device; a clamp 3 is fixedly arranged on one side of the mounting block 2 away from the mounting plate 1; a strip-shaped plate 5 is arranged between the bottom ends of the two groups of clips 3 fixedly arranged on the mounting plate 1, and a heat dissipation device is arranged in the strip-shaped plate 5; slide bars 6 are symmetrically and fixedly arranged on two sides of the strip-shaped plate 5; the sliding rod 6 is arranged in the arc-shaped hole 4 in a sliding manner; the arc-shaped hole 4 is arranged in the clamp 3; one end of the sliding rod 6, which is far away from the strip-shaped plate 5, is fixedly sleeved with a telescopic device; the telescopic device is rotatably arranged on the rotating device. When the device is used, the plastic extruder barrel is placed between the clamping clips 3 arranged on the same side through the lifting device and is fixed, after the fixation is finished, the heat dissipation device and the rotating device are started, the heat dissipation device can perform heat dissipation treatment on the plastic extruder barrel, the rotating device periodically performs forward and reverse rotation movement within a certain angle range, the rotating device rotates to drive the telescopic device to rotate towards one side far away from the mounting block 2, at the moment, the telescopic device is in a stretching state, the sliding rod 6 slides in the arc-shaped hole 4, even if the heat dissipation device moves towards one side, even if the fan blade 33 can perform heat dissipation treatment on the side edge of the plastic extruder barrel, when the rotating device drives the telescopic device to rotate towards one side close to the mounting block 2, even if the telescopic device is compressed, the sliding rod 6 slides in the arc-shaped hole 4, even if the strip-shaped plate 5 returns to the original position, the periodic forward and reverse rotation movement of, the effect of uniform heat dissipation of the outer wall of the machine barrel of the plastic extruder is achieved, and the machine barrel of the plastic extruder is prevented from being deformed at high temperature during working.

Referring to fig. 1 and 3, the heat dissipation device includes a third shaft 28, a fourth shaft 29, a second gear 30, a second chain 31, a second motor 32, and fan blades 33; the third rotating shafts 28 are provided with one group; four groups of the fourth rotating shafts 29 are arranged; the third rotating shaft 28 and the fourth rotating shaft 29 are uniformly distributed in parallel and rotatably installed in the strip-shaped plate 5, and the fourth rotating shafts 29 are symmetrically arranged on two sides of the third rotating shaft 28; a second gear 30 is fixedly mounted on each of the third rotating shaft 28 and the fourth rotating shaft 29, and the second gears 30 are in transmission fit connection through a second chain 31; fan blades 33 are arranged at one ends of the third rotating shaft 28 and the fourth rotating shaft 29 far away from the mounting plate 1 in a transmission manner; the fan blades 33 are arranged in the circular groove 12; the circular groove 12 is arranged in one side of the strip-shaped plate 5 far away from the mounting plate 1; a protective net 34 is fixedly arranged in one side of the circular groove 12 away from the fan blade 33; one end of the third rotating shaft 28, which is far away from the fan blade 33, is in transmission connection with a second motor 32; the second motor 32 is fixedly mounted on the strip-shaped plate 5.

Referring to fig. 4, the telescopic device includes a telescopic rod 7, a sliding plate 8, a first spring 9 and a telescopic sleeve 10; the telescopic rod 7 is fixedly sleeved on one end of the sliding rod 6 away from the strip-shaped plate 5; one end of the telescopic rod 7, which is far away from the sliding rod 6, is fixedly provided with a sliding plate 8; a first spring 9 is arranged on one side of the sliding plate 8, which is far away from the telescopic rod 7; the sliding plate 8 and the first spring 9 are both arranged in the telescopic sleeve 10 in a sliding manner, and the first spring 9 is in a compressed state; the end of the telescopic sleeve 10 far away from the telescopic rod 7 is fixedly sleeved on the rotating device.

Referring to fig. 1, the rotating device includes a first rotating shaft 11 and a first motor 13; two groups of first rotating shafts 11 are arranged; the first rotating shaft 11 is rotatably arranged in the mounting plate 1; two groups of telescopic sleeves 10 arranged on the same side are fixedly arranged on the first rotating shaft 11 in parallel; one end of the first rotating shaft 11 is in transmission connection with a first motor 13; the first motor 13 is fixedly installed on one side of the installation plate 1, and the first motor 13 rotates forward and backward at a certain angle.

Example 2

Referring to fig. 2, the lifting device includes a lifting sleeve 14, an i-shaped worm 15 and a threaded pipe 16; four groups of lifting sleeves 14 are arranged; the lifting sleeves 14 are symmetrically and fixedly arranged on two sides of the mounting plate 1 arranged below; an I-shaped worm 15 is arranged in the lifting sleeve 14 in a sliding manner; the top end of the I-shaped worm 15 is rotatably arranged in the mounting plate 1 arranged above; the top end of the I-shaped worm 15 is engaged with a threaded pipe 16 in a rotating transmission manner; the threaded pipes 16 are symmetrically and rotatably arranged in two sides of the mounting plate 1 arranged above; the threaded pipes 16 are connected with a transmission device in a transmission fit manner through a first chain 17.

Referring to fig. 2, the transmission device includes a first gear 18, a second shaft 19 and a turntable 20; the second rotating shaft 19 is rotatably installed in one side of the mounting plate 1 arranged above and is arranged in the middle of the two groups of threaded pipes 16; a first gear 18 is fixedly arranged at the bottom end of the second rotating shaft 19; the first gear 18 is in transmission fit connection with the threaded pipe 16 through a first chain 17; the top end of the second rotating shaft 19 is provided with a rotating disc 20 in a transmission way; a plurality of groups of fixing grooves 21 are uniformly distributed on the rotary table 20; a fixing device is slidably arranged in a fixing groove 21 formed in one side of the rotating disc 20. The fixing device fixes the rotating disc 20, namely the rotating disc 20 can not rotate, so that the lifting device can not rotate to move, namely, the barrel of the plastic extruder is fixed.

Referring to fig. 5, the fixing device includes a fixing pin 22; the fixing pin 22 is slidably arranged in a fixing groove 21 arranged at one side of the turntable 20; one end of the fixing pin 22, which is far away from the fixing groove 21, is fixedly provided with a square plate 23; a second spring 24 is arranged on one side of the square plate 23 away from the fixing pin 22; the square plate 23 and the second spring 24 are both arranged in the square groove 25 in a sliding manner; the square groove 25 is arranged in one side of the mounting plate 1 arranged above; a pull rod 26 is fixedly arranged above the square plate 23; the pull rod 26 is arranged in the moving groove 27 in a sliding mode; the moving groove 27 is arranged in one side of the mounting plate 1 arranged above, and the moving groove 27 is fixedly communicated with the top end of one side of the square groove 25 close to the fixing pin 22; the top end of the tie rod 26 is disposed above the mounting plate 1 disposed above.

The working principle of the invention is as follows:

when the fixing device is used, the pull rod 26 is pulled to move towards one side far away from the rotary disc 20, so that the fixing pin 22 slides out of the fixing groove 21, the rotary disc 20 is rotated, namely the first gear 18 and the second rotary shaft 19 rotate, the first gear 18 rotates to drive the threaded pipe 16 to rotate through the first chain 17, the threaded pipe 16 rotates to drive the I-shaped worm 15 to rotate, the I-shaped worm 15 rotates along with the vertical movement, namely the upper part 1 and the upper part 3 move in the vertical direction, so that the plastic extruder barrel can be placed between the clamping clips 3 arranged on the same side and fixed, after the fixing is finished, the pull rod 26 is loosened to enable the fixing pin 22 to slide into the fixing groove 21 arranged on the same side under the action force of the second spring 24, the rotary disc 20 is fixed at any time, namely the plastic extruder barrel is clamped and fixed, the first motor 13 and the second motor 32 are started, and the second motor 32 rotates, namely the third rotary shaft 28, The second gear 30 on the third rotating shaft 28 and the fan blade 33 on the third rotating shaft 28 rotate, the second gear 30 on the third rotating shaft 28 rotates to drive the second gear 30 on the fourth rotating shaft 29 to rotate through the second chain 31, that is, the fan blade 33 on the fourth rotating shaft 29 rotates, that is, the fan blade 33 rotates to perform heat dissipation treatment on the cylinder of the plastic extruder, the first motor 13 rotates to drive the first rotating shaft 11 to perform periodic forward and reverse rotation movement at a certain angle, that is, the telescopic sleeve 10 performs periodic forward and reverse rotation movement at a certain angle, when the telescopic sleeve 10 rotates to the side far from the mounting block 2, the sliding plate 8 moves to the side far from the first rotating shaft 11 under the action force of the first spring 9, so that the telescopic rod 7 moves to the side far from the first rotating shaft 11, that is, the slide rod 6 slides in the arc-shaped hole 4, that the fan blade 33 moves to the side, that the fan blade 33 can perform heat dissipation treatment on the side of the cylinder of the plastic extruder, when the telescopic sleeve 10 rotates to one side that is close to installation piece 2, be in rectilinear position because of telescopic sleeve 10 and telescopic link 7, so make telescopic link 7 to the one side removal that is close to first pivot 11, even get first spring 9 compressed, slide bar 6 slides in arc hole 4, even get strip shaped plate 5 and return home position, realize promptly that fan blade 33 is periodic positive and negative rotation motion in certain angle range, realize promptly that the even radiating effect of plastics extruder barrel side avoids plastics extruder barrel to warp at the during operation higher temperature.

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A plastic extruder barrel support frame comprises a mounting plate (1) and a clamp (3); the device is characterized in that the mounting plates (1) are provided with two groups, and the two groups of mounting plates (1) are fixedly mounted in parallel through four groups of lifting devices; the lifting devices are symmetrically arranged on two sides between the two groups of mounting plates (1); one side of the mounting plate (1) close to the lifting device is fixedly provided with a mounting block (2); a clamp (3) is fixedly arranged on one side of the mounting block (2) far away from the mounting plate (1); a strip-shaped plate (5) is arranged between the bottom ends of the two groups of clips (3) fixedly arranged on the mounting plate (1), and a heat dissipation device is arranged in the strip-shaped plate (5); slide bars (6) are symmetrically and fixedly arranged on two sides of the strip-shaped plate (5); the sliding rod (6) is arranged in the arc-shaped hole (4) in a sliding manner; the arc-shaped hole (4) is arranged in the clamp (3); one end of the sliding rod (6) far away from the strip-shaped plate (5) is fixedly sleeved with a telescopic device; the telescopic device is rotatably arranged on the rotating device.

2. A plastics extruder barrel carriage according to claim 1 wherein the telescopic means comprises a telescopic rod (7), a slide plate (8), a first spring (9) and a telescopic sleeve (10); the telescopic rod (7) is fixedly sleeved on one end of the sliding rod (6) far away from the strip-shaped plate (5); one end of the telescopic rod (7) far away from the sliding rod (6) is fixedly provided with a sliding plate (8); a first spring (9) is arranged on one side, away from the telescopic rod (7), of the sliding plate (8); the sliding plate (8) and the first spring (9) are both arranged in the telescopic sleeve (10) in a sliding mode, and the first spring (9) is in a compressed state; one end of the telescopic sleeve (10) far away from the telescopic rod (7) is fixedly sleeved on the rotating device.

3. A plastics extruder barrel cage according to claim 1 wherein the lifting means comprises a lifting sleeve (14), an i-shaped worm (15) and a threaded tube (16); four groups of lifting sleeves (14) are arranged; the lifting sleeves (14) are symmetrically and fixedly arranged on two sides of the mounting plate (1) arranged below; an I-shaped worm (15) is arranged in the lifting sleeve (14) in a sliding manner; the top end of the I-shaped worm (15) is rotatably arranged in the mounting plate (1) arranged above; the top end of the I-shaped worm (15) is engaged with a threaded pipe (16) in a rotating transmission manner; the threaded pipes (16) are symmetrically and rotatably arranged in two sides of the mounting plate (1) arranged above; the threaded pipes (16) are connected with a transmission device in a transmission fit mode through a first chain (17).

4. A plastics extruder barrel carriage according to claim 1 wherein said heat sink comprises a third shaft (28), a fourth shaft (29), a second gear (30), a second chain (31), a second motor (32) and fan blades (33); the third rotating shafts (28) are provided with one group; four groups of the fourth rotating shafts (29) are arranged; the third rotating shaft (28) and the fourth rotating shaft (29) are uniformly distributed in parallel and rotatably installed in the strip-shaped plate (5), and the fourth rotating shaft (29) is symmetrically arranged on two sides of the third rotating shaft (28); second gears (30) are fixedly arranged on the third rotating shaft (28) and the fourth rotating shaft (29), and the second gears (30) are in transmission fit connection through a second chain (31); fan blades (33) are arranged at one ends, far away from the mounting plate (1), of the third rotating shaft (28) and the fourth rotating shaft (29) in a transmission mode; the fan blades (33) are arranged in the circular groove (12); the circular groove (12) is arranged in one side of the strip-shaped plate (5) far away from the mounting plate (1); a protective net (34) is fixedly arranged in one side of the circular groove (12) far away from the fan blades (33); one end of the third rotating shaft (28) far away from the fan blade (33) is connected with a second motor (32) in a transmission way; and the second motor (32) is fixedly arranged on the strip-shaped plate (5).

5. A plastics extruder barrel carriage according to claim 2 wherein said rotating means comprises a first rotating shaft (11) and a first motor (13); the first rotating shafts (11) are provided with two groups; the first rotating shaft (11) is rotatably arranged in the mounting plate (1); two groups of telescopic sleeves (10) arranged at the same side are fixedly arranged on the first rotating shaft (11) in parallel; one end of the first rotating shaft (11) is connected with a first motor (13) in a transmission way; first motor (13) fixed mounting is on one side of mounting panel (1), and first motor (13) do the positive and negative rotation motion on certain angle.

6. A plastics extruder barrel cage according to claim 3 wherein the transmission means comprises a first gear (18), a second shaft (19) and a turntable (20); the second rotating shaft (19) is rotatably arranged in one side of the mounting plate (1) arranged above and is arranged between the two groups of threaded pipes (16); a first gear (18) is fixedly arranged at the bottom end of the second rotating shaft (19); the first gear (18) is in transmission fit connection with the threaded pipe (16) through a first chain (17); the top end of the second rotating shaft (19) is provided with a rotating disc (20) in a transmission way; a plurality of groups of fixing grooves (21) are uniformly distributed on the rotary table (20); and a fixing device is arranged in a fixing groove (21) arranged on one side of the turntable (20) in a sliding manner.

7. A plastics extruder barrel cage according to claim 6, wherein the securing means comprises a securing pin (22); the fixing pin (22) is arranged in a fixing groove (21) arranged on one side of the turntable (20) in a sliding manner; one end of the fixing pin (22) far away from the fixing groove (21) is fixedly provided with a square plate (23); a second spring (24) is arranged on one side, away from the fixing pin (22), of the square plate (23); the square plate (23) and the second spring (24) are arranged in the square groove (25) in a sliding manner; the square groove (25) is arranged in one side of the mounting plate (1) arranged above; a pull rod (26) is fixedly arranged above the square plate (23); the pull rod (26) is arranged in the moving groove (27) in a sliding mode; the moving groove (27) is arranged in one side of the mounting plate (1) arranged above, and the moving groove (27) is fixedly communicated with the top end of one side, close to the fixing pin (22), of the square groove (25); the top end of the pull rod (26) is arranged above the mounting plate (1) arranged above.