CN201442336U - Extrusion pipe nose device with adjustable wall thickness - Google Patents

Abstract

The utility model belongs to the technical field of high molecular material processing machinery and equipment, and relates to an extrusion pipe nose device with adjustable wall thickness, which does not need to dismantle a core model of a die. A lower expansion sleeve, an upper expansion sleeve and an inner mattress block of the core model are sleeved on an inner shaft of the core model; threads on the right end of an adjustment nut are screwed in a nut arranged at the right end of an inner shaft of the core model; an extruder axis is connected with the head of an extruder screw; a wavy line type heating ring is arranged at the periphery of the extruder axis; a riser is arranged in a central spindle and installed in a main die body from the left port of the main die body; the central spindle is connected with the main die body as a whole body; threads on the left end of the core model are connected with inner threads on the right end of the central spindle as a whole body; the die is installed at the left end of a pressing sleeve; inner threads on the left end of the die are matched and connected with outer threads on the right end of the main die body; the die and the main die body form the inner wall of a runner of an extruder nose; the inner diameter of the die is the external diameter of an extrusion pipe; and the external diameter of the core model is the inner diameter of the extrusion pipe. The extrusion pipe nose device has simple structure and can save labor, cost and energy resources.

Description

A kind of machine head device capable of adjusting wall thickness of extrusion pipe

Technical field:

The utility model belongs to the processing of high molecular material mechanical equipment technical field, relates to a kind of mouthful machine head device capable of adjusting wall thickness of extrusion pipe of mould core mould that do not need to dismantle.

Background technology:

In the tubing extrusion molding process of macromolecular material and composite thereof, make core and mouthful mould tubing that just can be shaped to certain wall thickness of material by extruder head.Existing extruding pipe material is to change its inner core first watch by demountor, changes the wall thickness dimension of extruding pipe material, and when this extruded die trial at new material, to extrude wall thickness extremely inconvenient in time adjusting apace, and time-consuming, effort, consumptive material; At present, do not see the device that a kind of rapid adjustment extruding dies wall thickness is arranged in the production as yet.In addition, in macromolecular material extruding pipe material process of manufacture,, during the tubing of different wall, be to realize promptly by the core of adjusting in the extruding dies with the tubing of a device fabrication same outer diameter as different inner diameters size.Existing design is when adjusting tube wall thickness, and core is taken out from the mouth mould, puts into the core of another kind of size again and realizes adjusting; But this adjustment can not be implemented in the stepless adjustment in the scope, lacks a kind of technology of energy rapid adjustment mouth mould size in the production; And, when prior art will be adjusted tube wall thickness, head to be cooled off 0.5～1 hour earlier, dismantle and install core again and need 0.5 hour again, heating also needs 0.5 hour to 1 hour again, lose time very much and manpower, so, existing technical disadvantages is to adjust wall thickness of extrusion pipe time-consuming (dismounting, the time of installing, cooling off, heating), effort (want the operative employee to dismantle original head, replace with new core again) with spanner, consumptive material (needs new core, need the processing cost), power consumption (cooling need expend the energy, and heating needs to expend heat energy again again).

Summary of the invention:

The purpose of this utility model is to overcome the shortcoming that prior art exists, seek to design and provide a kind of core that does not need to dismantle in mouthful mould can adjust the thick mouthful mould adjustment technology that is used for of mouthful die wall and realize the timely rapid adjustment tube wall thickness of production process degree, improve new material die trial efficient, to satisfy the requirement of changing the pipe internal diameter varying dimensions at any time in the production, adapt to different clients' special size demand.

To achieve these goals, the adjustable wall thickness of extrusion pipe frame head apparatus agent structure that relates to of the utility model comprises axle in the core, core block, gland, mouthful mould, main die body, holding screw, excessively cushion block in piece, mandrel, nut, machine footpath, heating collar, the core, upward expansion set, following expansion set, adjusting nut and passage; The interior axle of core is gone up the sequencing cover and is shaped on down expansion set, goes up cushion block in expansion set and the core, and the external screw thread that its left end is shaped on is screwed into the internal thread that the core block right-hand member is shaped on, wall thickness governor motion in the formation; The screw thread that the adjusting nut right-hand member is shaped on is screwed in the nut that the axle right-hand member is shaped in the core; Machine directly is used to connect the extruder screw head, and machine footpath periphery is shaped on heating collar, to supply with the enough heats of extruder, make material can be in die cavity flowing forming; Passage is used for strutting to its inside of tubing ventilation assurance behind extruding pipe material, and adhesion also maintains the tubing shape; The transition block device is gone in the mandrel, and from the main die body left port main die body of packing into, the screw thread that screw thread that the mandrel left side is shaped on and main die body left end are shaped on forms draw bail, tightens in left outer end with a pair of nut again, and mandrel and main die body are connected as one and locate; After excessively piece is shifted the end left onto holding screw is tightened and is packed on the main die body, make excessive piece and main motif position relative fixed; Make core block and mandrel form one after the screw thread that the core block left end is shaped on and the corresponding connection of internal thread that the mandrel right-hand member is shaped on; The mouth die device is at the left end of gland, and the corresponding assembling of external screw thread of the internal thread of mouthful mould left end and main die body right-hand member connects; Mouth mould and main die body are formed the extruder head runner inner wall, and mouthful mould internal diameter constitutes the external diameter of extruding pipe material, and the external diameter of core block is the internal diameter of extruding pipe material.

When the utility model need be produced heavy wall size tubing, adjusting nut can be moved right, because cushion block, last expansion set and following expansion set external diameter are pyramidal structure in the core, so, make the little contraction of outer radial of core block by loosening effect; When needs are produced thin-walled size tubing, can be with adjusting nut to moving to left, in core cushion block, under the outwards bloated effect of expansion set and following expansion set, the outer radial that makes core block is stretched out greatly and is reduced wall thickness; Adjust locking or unclamp nut, can adjust the wall thickness dimension of tubing, need not dismantle whole mandrel, can save adjusting time and manpower.

The utility model diameter of expansion set up and down increases and reduces the wall thickness that the diameter principle is applied to realize the quick adjustment extruding pipe material, save the adjustment time, save the cooling of assembling and dissembling process and heat the energy that expends, realize step-less adjustment, the wall thickness of fast velocity modulation extruding pipe material in new material or new product production process, and find suitable tubing thickness with the fastest speed; Compared with prior art, have simple in structurely, reliable preparation process is easily controlled, and saves outstanding advantages such as manpower, financial resources and the energy.

Description of drawings:

Fig. 1 is a structural principle schematic diagram of the present utility model.

The specific embodiment:

Also be described further in conjunction with the accompanying drawings below by embodiment.

Embodiment:

But the agent structure of the velocity modulation formula wall thickness of extrusion pipe head that present embodiment relates to comprises cushion block 12 in axle 1 in the core, die body 2, gland 3, mouth mould 4, main die body 5, holding screw 6, excessive piece 7, mandrel 8, nut 9, machine footpath 10, heating collar 11, the core, goes up expansion set 13, following expansion set 14, adjusting nut 15 and passage 16; The sequencing cover is shaped on down expansion set 14, goes up cushion block 12 in expansion set 13 and the core on the interior axle 1 of core, and the external screw thread of its left end is screwed into the internal thread of core block 2 right-hand members, constitutes interior wall thickness governor motion; Adjusting nut 15 right-hand member screw threads are screwed in the nut of axle 1 right-hand member in the core; Machine footpath 10 is used to connect the extruder screw head, and periphery is shaped on heating collar 11, to supply with the enough heats of extruder, make material can be in die cavity flowing forming; Passage 16 is used for strutting to its inside of tubing ventilation assurance behind extruding pipe material, and adhesion also maintains the tubing shape; Transition block 7 devices are gone in the mandrel 8, and from the main die body 5 left port main die body 5 of packing into, the screw thread of the screw thread on mandrel 8 left sides and main die body 5 left ends forms draw bail, tightens in left outer end with a pair of nut 8 again, and mandrel 8 and main die body 5 are connected as one and locate; Excessively piece 7 is shifted onto left behind the end holding screw 6 tightened and is packed on the main die body 5 and tightens, and makes excessive piece 7 and main die body 5 position relative fixed; Make core block 2 and mandrel 8 form one after the corresponding connection of internal thread of the screw thread of core block 2 left ends and mandrel 8 right-hand members; Mouth mould 4 devices are at the left end of gland 3, and the corresponding assembling of external screw thread of the internal thread of mouthful mould 4 left ends and main die body 5 right-hand members connects; Mouth mould 4 is formed the extruder head runner inner wall with main die body 5, and mouthful mould 4 internal diameters constitute the external diameter of pipe, and the external diameter of core block 2 is the internal diameter of extruding pipe material.

When present embodiment use to be produced, produce heavy wall size tubing if desired, adjusting nut 15 can be moved right, owing to cushion block 12 in the core, go up expansion set 13 and following expansion set 14 external diameters are pyramidal structure, so, make the little contraction of outer radial of core block 2 by loosening effect; When needs are produced thin-walled size tubing, can be with adjusting nut 15 to moving to left, in core cushion block 12, under the outwards bloated effects of expansion set 13 and following expansion set 14, the outer radial of core block 2 is stretched out greatly, thereby reduces wall thickness; So adjust locking or unclamp nut 15, can adjust the wall thickness dimension of tubing easily, need not dismantle whole mandrel, can save the adjusting time.

The operation principle of present embodiment is: material elder generation slave footpath 9 is squeezed in the runner that is made of mandrel 7 and main die body 5, and in the middle of the die cavity that inlet port mould 4 and core block 2 are formed, mouthful mould 4 has constituted the thickness of extruding tube wall with the tip-clearance of core block 2 again; When the tube wall of extruding when observation is too thick, fastening nut 14, promote expansion set and last expansion set down, make the outside distending of core block, cause the core block outer end diameter to increase, wall thickness is reduced, when the tube wall of extruding when observation is too thin, loosen nut 14, following expansion set and last expansion set will loosen, core block 2 end bores are reduced, tube wall is increased; Thus, can regulate the extruding pipe wall thickness easily by adjusting nut 14, and need not be with whole core of dismounting.

Claims (2)

1. machine head device capable of adjusting wall thickness of extrusion pipe, agent structure comprises cushion block in the interior axle of core, core block, gland, mouthful mould, main die body, holding screw, excessive piece, mandrel, nut, machine footpath, heating collar, the core, goes up expansion set, following expansion set, adjusting nut and passage, it is characterized in that axle is gone up the sequencing cover in the core is shaped on down expansion set, goes up expansion set and the interior cushion block of core, the external screw thread that the axle left end is shaped in the core is screwed into the internal thread that the core block right-hand member is shaped on, wall thickness governor motion in constituting; The screw thread that the adjusting nut right-hand member is shaped on is screwed in the nut that the axle right-hand member is shaped in the core; Machine directly connects the extruder screw head, and machine footpath periphery is shaped on wave formula heating collar; The transition block device is gone in the mandrel, and from the main die body left port main die body of packing into, the screw thread that screw thread that the mandrel left side is shaped on and main die body left end are shaped on forms draw bail, tightens in left outer end with a pair of nut again, and mandrel and main die body are connected as one and locate; After excessively piece is shifted the end left onto holding screw is tightened and is packed on the main die body, make excessive piece and main motif position relative fixed; Make core block and mandrel form one after the screw thread that the core block left end is shaped on and the corresponding connection of internal thread that the mandrel right-hand member is shaped on; The mouth die device is at the left end of gland, and the corresponding assembling of external screw thread of the internal thread of mouthful mould left end and main die body right-hand member connects; Mouth mould and main die body are formed the extruder head runner inner wall, and mouthful mould internal diameter constitutes the external diameter of extruding pipe material, and the external diameter of core block is the internal diameter of extruding pipe material.

2. machine head device capable of adjusting wall thickness of extrusion pipe according to claim 1 is characterized in that cushion block in the core, last expansion set and following expansion set external diameter are pyramidal structure.

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