CN112519172A

CN112519172A - Multi-stage heating extruder

Info

Publication number: CN112519172A
Application number: CN202011387831.0A
Authority: CN
Inventors: 肖小勤
Original assignee: Jiangsu Handing Machinery Co ltd
Current assignee: Jiangsu Handing Machinery Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-03-19

Abstract

The invention relates to a multi-stage heating extruder which comprises a rack, a machine barrel, a screw rod, a hopper and a main motor, wherein the machine barrel is fixedly arranged on the rack, the screw rod is rotatably arranged in the machine barrel, the main motor is in transmission fit with the screw rod to drive the screw rod to rotate, the hopper is arranged at the tail end of the machine barrel, a machine head is arranged at the front end of the machine barrel, and a first heating unit, a second heating unit, a third heating unit and a fourth heating unit are sequentially arranged on the machine barrel and used for carrying out segmented multi-stage heating on the machine barrel.

Description

Multi-stage heating extruder

Technical Field

The invention relates to the technical field of auxiliary equipment for cable processing, in particular to a multi-stage heating extruder.

Background

The working principle of the existing extruder is as follows: the method comprises the following steps of carrying out hot melting on particles for manufacturing the wire sheath by PVC or PE and the like, and then conveying the particles into a machine head flange of an extruder through a screw rod, wherein the machine head flange is connected with a screw cylinder flange of the extruder, and coating the PVC or PE and the like on a cable core wire, so that the wire sheath is realized. In the production process, the function of the extruder is to process and fuse the granular raw materials, so that the materials can be fully plasticized and then covered on the surface of the cable.

The existing extruder has a plurality of imperfect places, such as unbalanced heat control, insufficient cooling degree to influence the service life of peripheral parts, uneven extrusion effect, and the defects to influence the production efficiency of the extruder.

Disclosure of Invention

The invention aims to provide a multistage heating extruder which is simple in structure, efficient and energy-saving.

In order to solve the technical problem, the multi-stage heating extruder provided by the invention comprises a rack, a machine barrel, a screw, a hopper and a main motor, wherein the machine barrel is fixedly arranged on the rack, the screw is rotatably arranged in the machine barrel, the main motor is in transmission fit with the screw to drive the screw to rotate, the hopper is arranged at the tail end of the machine barrel, a machine head is arranged at the front end of the machine barrel, and a first heating unit, a second heating unit, a third heating unit and a fourth heating unit are sequentially arranged on the machine barrel and used for carrying out segmented multi-stage heating on the machine barrel.

Further, the first heating unit, the second heating unit, the third heating unit and the fourth heating unit comprise cast aluminum heating rings, blowers and heat conducting covers, the heat conducting covers are arranged in the machine barrel and cover the screw rods, and the cast aluminum heating rings are heated and then blown into the heat conducting covers by the blowers.

Furthermore, a plurality of heat conduction grooves are formed in the heat conduction cover along the circumferential direction, and the air outlet direction of the blower is perpendicular to the axis of each heat conduction groove, so that heat conduction is facilitated.

Further, set up three throw collet on the aircraft nose, three throw collet include end collet, left collet, right collet, collet cylinder, the top of collet cylinder and the central authorities transmission cooperation of end collet bottom, and the both ends of end collet set up first inclined end face, the bottom of left collet, right collet sets up the second inclined end face with first inclined end face looks adaptation to make the collet cylinder drive end collet rise the first inclined end terminal surface of both sides respectively with the second inclined end face butt of left collet, right collet, by end collet drive left collet, right collet open to both sides.

Furthermore, the machine barrel comprises a semicircular upper machine barrel and a semicircular lower machine barrel, the upper machine barrel is in hinged fit with the lower machine barrel, a liftable ejector rod shaft is arranged on one side of the machine barrel, and the top end of the ejector rod shaft is in transmission fit with the upper machine barrel, so that the upper machine barrel can be opened conveniently.

Furthermore, the multistage-heating extruder further comprises a hopper seat, the bottom end of the hopper is fixedly connected with the top end of the hopper seat, the bottom end of the hopper seat is fixedly connected with the upper barrel, and a feeding channel communicated with the interior of the barrel is arranged in the hopper seat so that materials in the hopper can enter the barrel.

Furthermore, a back-blowing interface communicated with the feeding channel is arranged on the hopper seat.

The invention has the technical effects that: (1) compared with the prior art, the extruder with multi-stage heating adopts the independently controlled multi-stage heating units to heat the machine barrel, so that the front and rear temperatures of the machine barrel can be respectively controlled, and the extrusion efficiency is prevented from being influenced by the temperature reduction when materials reach the front end of the machine barrel; (2) after each heating unit is heated by adopting a cast aluminum heating ring, high-temperature gas is blown into the heat conduction cover by a blower, heat is conducted by utilizing the awakened heat conduction groove on the heat conduction cover, and 360-degree dead-corner-free heating is carried out on the machine barrel; (3) a back-blowing interface is arranged on the hopper seat, so that the feeding channel is convenient to clean, and blockage is avoided; (4) through the switching of split collet cylinder control three throw split collet, form the support by the split collet cylinder to end split collet, utilize the split collet cylinder to push up end split collet when the pine presss from both sides, press from both sides the second slope terminal surface butt of first slope terminal surface and left split collet, right split collet by end split collet for end split collet promotes left split collet, right split collet and opens to both sides, can effectively reduce the intensity of labour when the operator pine presss from both sides, avoids appearing the incident.

Drawings

The invention is described in further detail below with reference to the drawings of the specification:

FIG. 1 is a schematic view of the multi-stage heated extruder of the present invention;

FIG. 2 is a left side view of FIG. 1;

in the figure: the device comprises a rack 1, a main motor 2, a machine barrel 3, a speed reducer 4, a shield 5, a hopper 6, a three-opening locking clamp 7, a locking clamp cylinder 8, a screw rod 9, a first heating unit 10, a second heating unit 11, a third heating unit 12, a fourth heating unit 13, a top rod shaft 14, a fixed seat 15, a hopper seat 16, a back flushing interface 17, a heat conduction cover 18 and a heat conduction groove 19.

Detailed Description

Example 1

As shown in fig. 1 to 2, the multi-stage heating extruder of this embodiment includes a frame 1, a barrel 3, a screw 9, a hopper 6, and a main motor 2, where the barrel 3 includes a semicircular upper barrel and a semicircular lower barrel, the upper barrel is hinged to the lower barrel, the lower barrel is fixedly disposed on the frame 1, a fixing seat 15 is disposed on one side of the frame 1, a lifting jack shaft 14 is disposed on the fixing seat 15, and a top end of the jack shaft 14 is in transmission fit with the upper barrel, so as to support the upper barrel when the upper barrel is opened.

The screw 9 is rotatably arranged in the machine barrel 3, the main motor 2 is fixedly arranged on one side of the rack 1, and the main motor 2 is in transmission fit with the screw 9 through a belt and a speed reducer 4 so that the main motor 2 drives the screw 9 to rotate; to prevent accidents, the belt is protected by a shield 5.

The front end of barrel 3 sets up the aircraft nose, set up three split collet chuck 7 on the aircraft nose, three split collet chuck 7 include end collet chuck, left collet chuck, right collet chuck, collet cylinder 8, the top of collet cylinder 8 and the central authorities transmission cooperation of end collet chuck bottom, the both ends of end collet chuck set up first inclined end face, the bottom of left collet chuck, right collet chuck sets up the second inclined end face with first inclined end face looks adaptation, so that when collet cylinder 8 drives end collet chuck to rise, the first inclined end terminal face of both sides respectively with left collet chuck, the second inclined end face butt of right collet chuck, drive left collet chuck, right collet chuck by end collet chuck to both sides open.

The hopper 6 is fixedly arranged at the tail end of the upper machine barrel through a hopper seat 16, the bottom end of the hopper 6 is fixedly connected with the top end of the hopper seat 16, the bottom end of the hopper seat 16 is fixedly connected with the upper machine barrel, and a feeding channel communicated with the interior of the machine barrel 3 is arranged in the hopper seat 16, so that materials in the hopper 6 can enter the machine barrel 3; the hopper seat 16 is provided with a back-blowing interface 17 communicated with the feeding channel for preventing blockage.

The first heating unit 10, the second heating unit 11, the third heating unit 12 and the fourth heating unit 13 are sequentially arranged on the machine barrel 3, the first heating unit 10, the second heating unit 11, the third heating unit 12 and the fourth heating unit 13 are covered to the front part of the machine barrel 3 from the tail part of the machine barrel 3 and are used for heating the machine barrel 3 in a segmented and multi-stage mode, and the first heating unit 10, the second heating unit 11, the third heating unit 12 and the fourth heating unit 13 are respectively and independently controlled to achieve different temperature control and facilitate adjustment of heating temperatures of different areas.

The first heating unit 10, the second heating unit 11, the third heating unit 12 and the fourth heating unit 13 comprise cast aluminum heating rings, a blower and a heat conduction cover 18, the cast aluminum heating rings and the blower are arranged outside the machine barrel 2, the heat conduction cover 18 is arranged in the machine barrel 3 and covers the screw rod 9, the cast aluminum heating rings are heated and then blown into the heat conduction cover 18 by the blower, the heat conduction cover 18 is provided with a plurality of heat conduction grooves 19 along the circumferential direction, and the air outlet direction of the blower is perpendicular to the axis of the heat conduction grooves 19, so that heat conduction is facilitated.

It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And such obvious variations or modifications which fall within the spirit of the invention are intended to be covered by the scope of the present invention.

Claims

1. The utility model provides a multistage heated extruder, its characterized in that includes frame, barrel, screw rod, hopper, main motor, the barrel is fixed to be set up in the frame, the rotatable setting of screw rod is in the barrel, and main motor and screw rod transmission cooperation are used for driving screw rod to rotate, the tail end of barrel is arranged in to the hopper, and the front end of barrel sets up the aircraft nose, sets gradually first heating unit, second heating unit, third heating unit and fourth heating unit on the barrel for carry out multistage heating of segmentation to the barrel.

2. The multi-stage heated extruder of claim 1, wherein the first heating unit, the second heating unit, the third heating unit and the fourth heating unit comprise a cast aluminum heating ring, a blower and a heat conducting cover, the heat conducting cover is disposed in the barrel and covers the screw, and the cast aluminum heating ring is heated and then blown into the heat conducting cover by the blower.

3. The multi-stage heating extruder as claimed in claim 2, wherein the heat conducting cover is provided with a plurality of heat conducting grooves along the circumferential direction, and the air outlet direction of the blower is perpendicular to the axes of the heat conducting grooves.

4. The multi-stage heating extruder as claimed in claim 2 or 3, wherein the head is provided with three locking clamps, the three locking clamps comprise a bottom locking clamp, a left locking clamp, a right locking clamp and a locking clamp cylinder, the top end of the locking clamp cylinder is in transmission fit with the center of the bottom locking clamp, the two ends of the bottom locking clamp are provided with first inclined end faces, the bottoms of the left locking clamp and the right locking clamp are provided with second inclined end faces matched with the first inclined end faces, so that the first inclined end faces of the two sides of the locking clamp cylinder are respectively abutted against the second inclined end faces of the left locking clamp and the right locking clamp when the locking clamp cylinder drives the bottom locking clamp to ascend, and the left locking clamp and the right locking clamp are driven by the bottom locking clamp to expand towards the two sides.

5. The multi-stage heated extruder of claim 4, wherein the barrel comprises a semicircular upper barrel and a semicircular lower barrel, the upper barrel is hinged to the lower barrel, a liftable ejector rod shaft is arranged on one side of the barrel, and the top end of the ejector rod shaft is in transmission fit with the upper barrel.

6. The multi-stage heating extruder according to claim 5, further comprising a hopper base, wherein the bottom end of the hopper is fixedly connected with the top end of the hopper base, the bottom end of the hopper base is fixedly connected with the upper barrel, and a feeding channel communicated with the interior of the upper barrel is arranged in the hopper base.

7. The multi-stage heating extruder of claim 6, wherein the hopper base is provided with a blowback interface communicated with the feed channel.